50results about How to "High precision assembly" patented technology

A permanent magnet includes magnetic poles that are arranged so as to alternate in polarity in the circumferential direction of the axis of rotation. The magnet is attached to one of a pair of rotatable members. The rotatable members are relatively rotatable about an axis of rotation. A magnetic flux inducing ring, including an annular ring body and a plurality of protrusions protruding from the ring body, is attached to the other rotatable member. A plurality of magnetic sensors is arranged adjacent to the ring body. A first facing portion and a second facing portion, each for inducing a part of a magnetic flux of the ring body, are provided and do not rotate with the permanent magnet and the magnetic flux inducing ring.

Provided is a high NA object lens which, in spite of being a high NA object lens, permits excellent measurement of inclination when the object lens is attached to an optical pickup device and which permits high precision assembly with the optical pickup device, and also provided is the optical pickup device comprising the high NA object lens. The object lens comprises: a first optical face that is formed on the light source side; a second optical face that faces the first optical face and is formed having a radius of curvature greater than that of the first optical face; and a planar end face that is positioned outside the second optical face as seen from the optical axis direction and is substantially orthogonal to the optical axis. The object lens satisfies the expression 0.12=A/B= 0.5 (1), where the image-side aperture number (NA) is 0.7 to 0.9, and, as seen from the optical axis direction, the distance of a straight line, which passes through the optical axis and the end face, within the area of the end face is A (mm), and the distance of a straight line from the optical axis to the outermost circumferential section of the end face is B (mm).

The invention relates to an antenna unit assembly assembling device and a collecting, assembling and measuring integrated control system and method thereof. The assembling device comprises a mountingand dismounting air cylinder, a mounting support, an outer supporting assembly for picking or dismounting an antenna unit assembly and a camera. A first mounting face and a second mounting face whichare perpendicular are arranged on the mounting support, the mounting and dismounting air cylinder is arranged on the first mounting face, the camera is arranged on the second mounting face, the optical axis of the camera is perpendicular to the second mounting face, the driving end of the mounting and dismounting air cylinder is away from the first mounting face, and is connected with the outer supporting assembly to drive the outer supporting assembly to do reciprocated moving in the direction perpendicular to the first mounting face, the camera is used for carrying out image collecting and parameter extracting on the characteristics of the assembling position of the antenna array face, and the mounting and dismounting air cylinder can rotate to the assembling position and drive the outersupporting assembly to move to finish mounting or dismounting of the antenna unit assembly on the antenna array face. Mechanical and electrical mounting and switching of the antenna unit assembly assembling device and an industrial robot or execution mechanism can be achieved, and assembling precision needs are ensured.

An assembling method of a stator blade ring segment which can suppress the risks of thermal deformation and deterioration of strength, secure a degree of freedom of profile, and enhance the compression performance of a compressor. Furthermore, welding is provided in which a welding object can be prevented from floating from a groove or a recess at the time of welding, and welding can be carried out well. Sidewall portions (50b) on the opposite sides are formed to incline against the bottom (50a) so that the width of a groove (50) formed in each segment split body (41) decreases gradually from the outer circumferential side toward the bottom(50a). A coupling member (42) has such a cross-section that its width becomes largest at a protrusion (42b) located at an intermediate part in the thickness direction. When the coupling member (42) is placed in the groove (50), the protrusions (42b) on the opposite sides abut against or approach the sidewall portion (50b) of the groove (50), a space (100) is formed on the bottom (50a) side of the groove (50) and a groove (200) of substantially V-shaped cross-section is formed on the side away from the bottom (50a) of the groove (50).

A calibration apparatus and method for optical system assembly is provided, applicable to a finite conjugate optical system to determine the optimal image-forming positions of the light source and the focus object lens of the finite conjugate optical system. The apparatus includes an external light source, a low magnification image-forming optical system, an electrical control system and a monitor. When the parallel beam generated by the external light source is parallel to the optical axis of the finite conjugate optical system, the low magnification image-forming optical system is used to magnify the two focal spots formed by the external light source and the internal light source of the finite conjugate optical system to be calibrated. Finally, by adjusting the related position of the focus object lens or the internal light source of the finite conjugate optical system, the optimal relative positions between the light source and the focus object lens of the finite conjugate optical system can be found. The calibration apparatus of the present invention has the advantages of simple structure, easy assemble and setup, high precision assembly and low cost, as well as the capability to perform optimal calibration of the relative position of the focus object lens and the light source of each individual finite conjugate optical system.

The invention provides a control method for volume-adjustable non-destructive seeding. A volume-adjustable non-destructive seeding device is used to control non-destructive seeding, in the volume-adjustable non-destructive seeding device, a seeding control part and a seed protecting part are respectively arranged in a support, the seed protecting part is in contact with the seeding control part, the interior of the support is provided with a support circular arc section in contact with the seeding control part, and the seeding control part is composed of a seeding wheel main body, a limit adjustment component, a cavity adjustment component, a lateral cavity component, a floating drive component and a drive main shaft; and a left seed filling channel, a right seed filling channel, a seedingwheel seed filling channel and a seed filling cavity which can complete seeding and have adjustable volumes are formed in the support through the above structure, and a left cavity cylinder and a right cavity cylinder in the lateral cavity component can communicate with the seeding wheel seed filling channel after being docked. The limit adjustment component is adjusted to realize dynamic adjustment of a volume of the seed filling cavity, quantified seeds are further received into the seed filling cavity to avoid hard contact with the seed protecting part to cause mechanical damage, so that the non-destructive operation is realized.

The invention discloses a square billet continuous casting segment assembling method, and belongs to the technical field. The square billet continuous casting segment assembling method is characterized by comprising the following steps of 1, preparing before assembling, arranging supporting frame square boxes, and arranging a T-shaped auxiliary device; 2, assembling a lower guide roller; and 3, assembling a roller frame. The invention provides the square billet continuous casting segment assembling method. Preassembling and synchronous detection are performed. Quick and high-precision detection and segment assembling can be realized, the production cycle is shortened by one week, the production cost is reduced by 10%-15%, and the product qualification rate is increased to 99.5%.